Tensile structures, software, cloth, many aspects have been cited over the years.
I will once again mention that old story of the blind men describing an elephant.
Except in our case “the” elephant is not yet defined, or let’s say may not yet exist.
Or is kite-reeling the answer and we’re just waiting for it to get some traction?.
Blind men trying to find the elephant:
“I think the elephant is small, furry, and cuddly, and likes to lick your face!” “I believe the elephant is cold-blooded, festooned with scales and horns” “No the elephant has six legs!” “The elephant has no legs - they’ve been replaced with software!” “No the elephant is jellylike with no brain at all!” “I think the elephant will save the world!” “The elephant must not be flown since it is fragile, and represents the last of an endangered species!.” “The elephant is a land animal!” “No the elephant is an aquatic animal”. “Well whatever this elephant thing is, we obviously need to keep looking.”